/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.geode.distributed.internal.membership.gms.interfaces;

import java.net.InetSocketAddress;
import java.util.List;
import java.util.Map;

import org.apache.geode.distributed.DistributedMember;
import org.apache.geode.distributed.internal.membership.InternalDistributedMember;
import org.apache.geode.distributed.internal.membership.NetMember;

public interface HealthMonitor extends Service {

  /**
   * Note that this member has been contacted by the given member
   * @param sender
   */
  public void contactedBy(InternalDistributedMember sender);

  /**
   * initiate, asynchronously, suspicion that the member is no longer available
   * @param mbr
   * @param reason
   */
  public void suspect(InternalDistributedMember mbr, String reason);

  /**
   * Check on the health of the given member, initiating suspicion if it
   * fails.  Return true if the member is found to be available, false
   * if it isn't.
   * @param mbr
   * @param reason the reason this check is being performed
   * @param initiateRemoval if the member should be removed if it is not available
   */
  public boolean checkIfAvailable(DistributedMember mbr, String reason, boolean initiateRemoval);
  
  /**
   * Invoked by the Manager, this notifies the HealthMonitor that a
   * ShutdownMessage has been received from the given member
   */
  public void memberShutdown(DistributedMember mbr, String reason);
  
  /**
   * Returns the failure detection port for this member, or -1 if
   * there is no such port
   */
  public int getFailureDetectionPort();

}
